FRP composites have many benefits to
their selection and use. The selection of the materials depends on
the performance and intended use of the product. The composites
designer can tailor the performance of the end product with proper
selection of materials. It is important for the end-user to
understand the application environment, load performance and
durability requirements of the product and convey this information
to the composites industry professional.
FRP composites provide a host of
benefits ideal for structural applications including:
High Strength and Stiffness
Retention - composites can be designed to provide a wide range of
mechanical properties including tensile, flexural, impact and compressive
strengths. And, unlike traditional materials, composites can have
their strengths oriented to meet specific design requirements of an
application.
Light Weight/Parts Consolidation
- FRP composites deliver more strength per unit of weight than most
metals. In fact, FRP composites are generally 1/5th the weight of
steel. The composite can also be shaped into one complex part, often
times replacing assemblies of several parts and fasteners. The
combination of these two benefits makes FRP composites a powerful material
system- structures can be partially or completely pre-fabricated at the
manufacturer's facility, delivered on-site and installed in hours.
Creep (Permanent Deflection Under
Long Term Loading) - The addition of the reinforcement to the polymer
matrix increases the creep resistance of the properly designed FRP
part.
Resistance to Environmental
Factors - Composites display excellent resistance to the corrosive
effects of:
-
Freeze-thaw: because composites are not attacked by
galvanic corrosion and have low water absorption, they resist the
destructive expansion of freezing water.
-
Weathering and Ultra-Violet Light: FRP composite
structures designed for weather exposure are normally fabricated with a
surface layer containing a pigmented gel coat or have an ultraviolet
(UV) inhibitor included as an additive to the composite matrix.
Both methods provide protection to the underlying material by screening
out UV rays and minimizing water absorption along the fiber/resin
interface.
-
Chemicals and Temperature:
Composites do not rust or corrode and can be formulated to
provide long-term resistance to nearly every chemical and
temperature environment.
Fire Performance of Composites
- Composites can be designed to meet the most stringent fire
regulations by the use of special resins and additives.
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